My vet suggested that I take an empty soda can and fill it will pennies (about 10) and tape the top up. When the dog using the restroom in a forbidden area, you put them near it so that they can see why they are being punished. You shack the can and say No! I have trained a few dogs with this method and it is wonderful. Some people feel that it is cruel, but it came as a vet'e advice. I trained my Tango in 1 week with this method, though not all pup's are that easy. I also had a fried use the can method to train her boxer to not jump on the kitchen counter. The noise is annoying to the dog and they learn quickly what to not do so that they don't have to hear it. Give it a try!